Dumping-car.



C. P. ASTROM.

DUMPING CAR.

APPLICATION FILED JAN.9.1911.

Patented DeofQ, 1913.

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C. P. ASTROM.

DUMPING CAR.

APPLICATION FILED JAN.0.1911.

Patented Dec. 9, 1913.

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DUMPING GAR.

APPLICATION FILED 1,111.9. 1911.

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UNITED STATES PATENT GFFICE.

CARL P. ASTROM, OF EAST ORANGE, NEW ,J ERSEY, ASSIGNOR T M. H. TREADWELLCOMPANY, A CORPORATION 0F NEW YORK DUMPINGCAB.

Specication of Letters Patent.

Application led January 9, 1911. Serial No. 601,502.

and more particularly has reference to cars wherein the body is mountedto be moved and simultaneously turned in order to discharge thecontents.

The object of the invention is to provide improved actuating means for aslag or cinder car, wherein the movement ofthe car body from its centralupright 'position to its outward dumped position Awill be effected bythe full stroke of a piston and cylinder acting through pivoted leverconnections, whereby a simple and strong apparatus will be produced in asimpler manner than has heretofore been employed.

The invention also comprehends an 'nnproved system of fluid checkingmeans whereby a fluid cylinder and piston operate simultaneously withthe working cylinder and piston, and the checking effect is Independentof the differential area between the sides of the piston, and alsocapable of b eing easily adjusted asmay be desired 1n operation.

The invention will be more fully understood in connection with thedescription of the accompanying drawings, wherein-- Figure 1 is an endelevation of a dumping car embodying the invention; Fig. 2 is a sideelevation; Fig. 3 is an enlarged detail view showing the oil checkingpassages and oil reservoir, seen from above; Fig. 4 is a side elevation,and Figs. 5 and 6 represent vertical sections showin the valves and pipeconnections partly 1n sections on the lines 6 6 of Figs. 3 and 4. Fig. 7is a detail elevation, partly in section, showing the mounting of thecross-head, the cylinders being removed.

1 represents an end frame mounted on railway trucks 2, and provided withthe usual coupling equipments lused on cars of this type. At each end ofthe end frame are supporting pedestals 5, raised somewhat above the topof the frame, which have their upper faces formed as transverse trackson which the car body is supported in such manner as to permit the bodyto move laterally, and simultaneously tilt, in either direction.

6 represents a car body, herein shown as a slag or cinder ladle carriedby and fastened to a yoke 7, which is provided at each end withtrunnions 8 which rest on the track portions of the respective pedestals5. Each pedestal has a rack 10, and meshing therein are gears 11 whichare keyed to the trunnions 8. The power mechanism for operating thecylinder 11a contains a piston (not shown, but having a piston rod 12).Air or steam is admitted to one or the other side of the piston throughpipes 13, 14, from a three-way valve 15, which at the same time controlsthe exhaust pipe 16 leading from the other end of the cylinder, it beingunderstood that when pressure is admitted to one side of the piston theother side is open to the exhaust.

In order to operate the trunnions 8 and thereby rock the body, across-head 17 sliding on a guide 18 is provided. The ends 17 of thecrosshead carry a bar 19, and pivoted thereon is a filler block 20,which is adapted to fill the space between one of the crosshead lends 17and a trunnion block 21 which contains the journal for the end of thetrunnion 8. In order to operate the crosshead, a lever 23 is pivoted at24 to the end frame of the car and connected intermediate its ends bypin 25 with the piston rod 12, and at its upper end connected by pin andslot connection 26 to a projection 27 on the lower part of the crosshead17.

In the position shown, in Fig. 1, the piston in cylinder 11a is at theright hand, and the filler block 20 is in such position that when steamor air is admitted on the right side of the working piston in cylinder11a the car body will be dumped to the left by a simultaneous lateraland tilting movement. After the car body has been dumped it can bebrought back to center by admitting steam on the left side of theworking piston. In order to dump the car body on the right side, it willbe necessary to swing the filler block 20 out from between crossheadends 17 and the trunnion block 21. By now applying power to the rightside of the working piston the crosshead will be moved to the left,until stopped by the cross head 17 striking the stop spring 22.Thereupon the filler block 20 can be dropped between the left side ofthe trunnion bearing block 21 and the left crosshead end 17. If nowsteam be admitted on the left side of the working piston the car bodywill be dumped to the right and can be returned from dumped position byan opposite movement.

It has been found in practice that car bodies such as these cannot besatisfactorily controlled when loaded, solely by the steam pressure,because of the momentum which the parts acquire after having once beenstarted in motion, and also because of shifting of the center ofgravity. In order to control the movement of the car body, a checkingcylinder 30 is provided, containing a checking piston 29 connected tothe end of the main pistonrod 12. Mounted on the top of the cylinder 30is an oil reservoir 31 which is closed by a cover 32. From one end ofthe cylinder 30 is a pipe 33 leading to a valve chamber 34, and thenceby a passage 35 to the oil reservoir 31. From the other end of thecylinder a similar pipe 37 leads through a valve chamber 38, similar tol34, and thence by passage 39 to the oil reservoir. The valve chambers38 and 34 are alike in construction, as shown in Fig. 5. Each consistsof a seat containing a ball or valve 40 which falls by gravity andcloses the assage. A screw rod 41 passing througlh a suitable stuiingbox is arranged to adjust the opening when the ball is at its lowestposition, and thereby to more or less close the passage.

In the position of parts shown in Fig. 1, the car body is in position tobe dumped to the left with the working piston and the checking piston 29at the right ends of their respective cylinders. Upon applying the poweron the right side of the working piston the movement commences, and theoil in cylinder 30 is forced by the piston 29 through pipe 33, valvechamber 34, and passage 35 to the oil reservoir 31. Thus the checkingeffect can be controlled by adjusting the closing of the ball valve invalve chamber 34 for any desired rate. At the same time that the piston29 forces the oil out of the left end of the cylinder 30,'oil from thereservoir will be drawnv into the right end of cylinder 30 throu passage39, valve chamber 38 and pipe 3%. It will be seen that the oil can owfreely into the cylinder 30 from the reservoir 31 without beingrestricted by the particular adjustment ofA the valve chamber 38. Whenthe movement is in the opposite direction, as when returning the car odyto center after havingv been dumped to the left, or when the car body isto be dumped from the center to the right, it will be seen that the rateof checking will be controlled by the adjustment of the valve in valvechamber 38, while the other side of the piston 29l will pump fromreservoir 31. By these independent valve and pipe connections incombination with the reservoir, it will be seen that the checking ratecan be the same on both sides, and be independent of the differentialarea of the piston 29, by reason of having a greater effective area onone side due to the absence of the piston rod 12. It will also be seenthat the oil reservoir compensate for the difference in displacement dueto the volume of the piston rod in the cylinder.

In order to lock the car body in upright position, an operating handle45 is attached to a transversely extending rock shaft 46. This rockshaft carries dogs 47, 48, which are adapted to engage withcorresponding slots on the crosshead guide to lock the car body inupright position by mechanically locking/a depending tongue 51 on thecrosshead against movement. When the shaft 46 is rocked to disengage thedogs, the tongue is free to move in the guide slot.

From the foregoing description, it is thought that the nature andadvantages of the invention will be understood, and the manner ofcarrying it out. Various details of construction accordin to well knownpractice will be used, suc as suitable controlling valves, power,couplings, etc.,.which are not a part of this invention.

Various modifications and changes within the scope of the appendedclaims may be made without departing from the invention.

Having thus described my invention I declare that what I claim as newand desire to secure by Letters Patent is,-

1. The combination in a dumping car, with a. tilting and movable carbody, of a power cylinder and piston, a trunnionl supporting the carbody, and an actuating lever pivoted on the frame connecting the movableelement ofthe cylinder and piston and the trunnion.

2. The combination in a dumping car, with a tilting and movable carbody, of a power cylinder and piston, a trunnion supporting the carbody, and an actuating lever connectin themovable element of thecylinder an piston and the trunnion, said lever being pivoted at one endon the car frame.

3. The combination in a dumping car, with a tilting and movable carbody, of a power cylinder and piston, a trunnion supporting the carbody, an actuating lever connecting the movable element of the cylinderand piston and the trunnion, said lever being pivoted at one end on thecar frame, and meansfor shifting the lever independently of the trunnionto enable the car body to be oppositely dumped.

4. The combination in a dumping car, with a tilting and movable carbody, of a power cylinder and iston, a trunnion supporting the car bo anactuating lever connecting the movable element ofthe cylinder and pistonand the trunnion, said lever being pivoted at one end on the car frame,and means comprising a crosshead and movable block for changing t-heactuating connection from one side to the other.

5. The combination in a dumping car, with a tilting and movable carbody, of a power cylinder and piston, a trunnion connected therewith, achecking cylinder and piston, one being connected to said trunnion,means for independently controlling the checking effect in eachdirection and means compensating in said checking cylinder fordifference in fluid displacement on opposite sides of the checkingpiston.

6. The combination in a dumping car, with a dumping car body, of poweractuating means, and checking means comprising a cylinder, a piston insaid cylinder and a piston rod extending through one end thereof, afluid passage between the ends of said cylinder, means for independentlycontrolling the checking elfect in each direction and means compensatingfor difference in fluid displacement by movements in oppositedirections.

7. The combination in a dumping car, with a dumping car body, of poweractuating means, a fluid checking cylinder, piston and by-pass, meansfor independently controlling the checking ei'ect in each direction anda reservoir communicating with said by-pass.

8. The combination in a dumping car, with a tilting and laterallymovable car body, of a power cylinder at one side of the car body and achecking cylinder at the other side of the car body in line therewith, acommon piston rod connecting said cylinders, with a piston on each endthereof, a trunnion supporting the car body, and an actuating leverpivoted on the car frame and connecting said piston rod with thetrunnion.

9. The combination in a dumping car, witha tilting and laterally movablecar body, of a power cylinder at one side of the car body and a checkingcylinder atthe other side of the car body in line therewith, a commonpiston rod connecting said cylinders, with a piston on each end thereof,a trunnion supporting the car body, and an actuating lever pivoted onthe car frame and connecting said piston rod with the trunnion, thelateral travel of the piston rod being less than the lateral travel ofsaid trunnion.

10. The combination in a dumping car, with a tilting and bodily movablecar body, of a power cylinder and a checking cylinder in axialalinement, a common piston rod connecting said cylinders, with a pistonon each end thereof, a trunnion supporting the car body, and anactuating lever pivoted on the car frame and connecting said piston rodwith the trunnion.

In testimony whereof I aiix my signature in presence of two witnesses.

CARL P. ASTROM. lVitnesses:

J. S. WoosTEB, GEo. N. KERK.

